Pneumatic and cushion head



March 30,192 1,578,723

M. FELLOWS PNEUMATICA ND CUSHION HEAD Filed Nov. 22, 1921 i pate nted, Mar. 30,

"UNITED S (MEL rELnows,.;or-errrc1ieo, r LrNors. i I. i

.YPNEUMATICVAND GUSHI HEA Application ifiled November jag, 1921. Serial No. 517,088.

Tb all whom it concern." 3 I Be it known that I, MnIJFELLo have invented certain ne' wsand useful 1m provements n Pneumatic "and Cushlon Heads; and

to be a full, clear, and: exact description the a n ventron,-. such-as will 7 enable others,

skilled ;in;theart to which it appertainsto make and use the same.

My present invention re used in pneumatic tube systems and hasparwith the heads of-such ca-12.

.. anercompress'or or clamp [member's and}5" both secured upon thev carrier 2 byaceiitral ticularly to do riers.- pri. Primarilyit' is any object I to provide a carrierhead admitting of the employment'ot res1hent= mater1 al -hav1ng-;greater lasting;

Additionally, it is an object of my invention to provide means'for spreading circum- 4 ferentlally the worn packing material of the carrier head in order that the periphery thereof, when reduced by wear, may be en larged to fit snugly in the tube.

It is a further object of the invention to provide a carrier head which may be inexpensively manufactured but render long service and one which may replace the conventional carrier head without alteration of the carrier or the requirement of special skill or operation for attachment.

It is a still further ob'e ct 'oi't'iny invention to produce a carrierhead which'may 'be secureddirectly to the carrier, and, also, one in which interchangeability of parts may be V successfully practiced.

. These andsuch other objectsas may'herea inafter appear are obtainedby' the novel construction, combination and arrangement of the several parts of my device. Refer ence will now be had to the accompanying drawing forming a part of this specification andinwhich Q I Figure 1 is a fragmentary view of a conventional carrier, my carrier head, and a portion of a pneumatic tube; I

Figure 2 is a vertical section of one form of my carrier head;

Figure 3-is a similar view of a second ws, acitizeii"' of the United States, residing at Chicago, in; the county of Cook and State .-of".Illi no'is,- x. p,

. Ilikerefere'nce harac tersarejused a; des

do hereby declare Qthe fQllOWing lows. I

latesto carriers rier head Sisadapteol to-be, inserted. V

lcured against displacementfbya 'w ovidin'g for readyrepl ace'ment" a 1111b] threadedf ong said bolt .6 and in en material with new .material.

Y for the bolt head, both members being interoptional. As shown in Fig. l, the outside r form:ofiny inventionillustrating itsspread ignatelikepartS in the several views fin the 1 'ee f e hee apeesmea Referring designatesjthe end of pneumatic tube lint whlchfl. the *carrier. 2 provided with my 'ca'r From]. Figure 2,""it, will be seen; that carrier head 3compr sesan outer and a -n1 ly disposed bolt 6 inserted through ,an ape ture in thegeiid wallfl i'of carrier 2' ash ff 'tute the head thereofas indicated by 5% .in

Fig. 3. In Fig. both clamping members 4 and 5 are provided with similar'sockets changeable. I

The header the bolt is. preterably'coum I tersunk into .anexternal clamping or. com

pressor member although this construction is faces of the clamping members may be fiat instead of sloping as shown in Figs. 2 and? The ring member 8 may be of any suitable f material as of rubber, either hollow or solid.

hen made, it is of such diameter that the clamp members at and 5 need not com: press upon it to secure a snug fit in tube 1. As it wears down from frictional contact with the walls of tube, 1, nut T nay be -reall are removed after which the ring 8 may be d1scarded when it is so wornv that it ad-- mits passage of air around it. Figure 3 shows the compressor members abutting one another. I V

It is apparent that a construction such as I llLVe ClQSCIlbQCl PI'OVldQS a flexible carrler head readily adapting itself to the curves, bends and irregular ties of the lnterior suis faceof tube 1, and one which will keep such interior surface clean and highly polished. No lintor frayed material will be deposited in the-tube l to retard or stop carriers 2 or to necessitate cleansing the tubes with special carriers as is nowrequired I t I ltis manifest that all p'ossible..embodi'- ments' of my invention are not herein disclosed and all of its [uses are not detailed,

therefore, it is not my intention to belimited to the embodiments herein illustrated and described but to include all modifications alterations and changes coming within the scope of the claims hereto'appended. I

In this connection it is proper to add that while I have illustrated anarcuate seat in clamp members {i and 5 formember: 8,21

7 straight or inclined interior surface for said clamp members providing, in cross section,

a rectangular or V-shaped seat for said member 8,1nay be substituted for the. configuration first referred to.

hat I claim is new and desire to procure by Letters Patent of the United States, is-

1. In a pneumatic tube system,a carrier having circular members and detachable spacing members therebetween, and an elas tic washer between said members.

2. A carrier head for use upon carriers in pneumatic tubes, comprising clamp members, detachable spacers between said members, and a tube engaging member surrounding said spacers.

3.'A carrier head for a carrier in' a'pneumatic tube comprising a ring member for engaging the inner surface of said tube,

spacers intermediate said compressor mem bers,"and a bolt passing through the'latten 5 ,and said spacers, the removal of the spacers one by one admitting of external expansion" of the ring member to compensate for circumferential wear. t. The combination in a carrier tube, of a pair of discs each cut away on adjacent faces:

to define between them an annular, periph eral groove, a plurality of spacers between said discs and a compressible ring seated in said groove. a f In testimony whereof I aflix my signature.

MEL FELLOVS.

compressor members disposed at opposite side of said ring member, a multiplicity of 

